A5064460569- Environmental Toxicology and Ecotoxicology
- Fish Ecology and Management Studies
- Aquaculture Nutrition and Growth
- Toxic Organic Pollutants Impact
- Physiological and biochemical adaptations
- Effects and risks of endocrine disrupting chemicals
- Fish Biology and Ecology Studies
- Marine and fisheries research
- Mercury impact and mitigation studies
- Reproductive biology and impacts on aquatic species
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Pharmaceutical and Antibiotic Environmental Impacts
- Marine animal studies overview
- Genetic diversity and population structure
- Ichthyology and Marine Biology
- Ocean Acidification Effects and Responses
- Oil Spill Detection and Mitigation
- Underwater Acoustics Research
- Marine and coastal plant biology
- Scientific Research and Discoveries
- Bat Biology and Ecology Studies
- Zebrafish Biomedical Research Applications
- Microplastics and Plastic Pollution
- Birth, Development, and Health
- Environmental DNA in Biodiversity Studies
Norwegian Institute of Marine Research
2020-2024
University of North Texas
2016-2019
LIttoral ENvironnement et Sociétés
2014-2016
Ifremer
2011-2016
La Rochelle Université
2014-2016
Centre National de la Recherche Scientifique
2016
Laboratoire de Recherche Scientifique
2012
Droit, religion, entreprise et société
2012
Laboratoire d’Océanologie et de Géosciences
2011
The 2010 Deepwater Horizon oil spill coincided with the spawning season of many pelagic fish species in Gulf Mexico. Yet, few studies have investigated physiological responses larval to interactions between anthropogenic crude exposure and natural factors (e.g. temperature, oxygen levels). Consequently, mahi (Coryphaena hippurus) embryos were exposed for 24 hours combinations two temperatures (26 30°C) six concentrations oiled fractions weathered (from 0 44.1 μg ∑50PAHs·L-1). In 56...
Atlantic Halibut ( Hippoglossus hippoglossus ) has a X/Y genetic sex determination system, but the determining factor is not known. We produced high-quality genome assembly from male and identified parts of chromosome 13 as Y due to sequence divergence between sexes segregation genotypes in pedigrees. Linkage analysis revealed that all chromosomes exhibit heterochiasmy, i.e. male-only female-only meiotic recombination regions (MRR/FRR). show FRR/MRR intervals differ nucleotide diversity...
Polycyclic aromatic hydrocarbons (PAHs) have frequently been suspected of governing crude oil toxicity because similar morphological defects in fish. However, PAH concentrations are often not high enough to explain the observed toxicity. We hypothesize that one can enhance metabolism and another when administered as a mixture. Early life stage Atlantic haddock (Melanogrammus aeglefinus) were this study exposed phenanthrene presence absence 3-methylchrysene is known induce metabolic enzyme...
Cardiovascular performance is altered by temperature in larval fishes, but how acute versus chronic exposures independently affect cardiac morphology and physiology the growing larva poorly understood. Consequently, we investigated influence of water on plasticity developing mahi-mahi. Morphological (e.g. standard length, heart angle) physiological variables rate fH, stroke volume, output) were recorded under two conditions imaging: (i) exposure where embryos reared at 25°C up to 128 h...
Tricyclic polycyclic aromatic hydrocarbons (PAHs) are believed to be the primary toxic components of crude oil. Such compounds including phenanthrene known have direct effects on cardiac tissue, which lead malformations during organogenesis in early life stage fish. We tested a suite 13 alkyl-phenanthrenes compare uptake and developmental toxicity haddock (Melanogrammus aeglefinus) embryos gastrulation/organogenesis beginning at 2 days post fertilization via passive dosing. The were their...
Understanding cardiac function in developing larval fishes is crucial for assessing their physiological condition and overall health. Cardiac output measurements transparent fish larvae other vertebrates have long been made by analyzing videos of the beating heart, modeling this structure using a conventional simple prolate spheroid shape model. However, heart changes during early development subsequent maturation, but no consideration has effect different geometries on estimation. The...
To further understand the complexity of developmental toxicity dispersed oil and importance exposure timing on fish early life stages, Atlantic halibut (Hippoglossus hippoglossus) were exposed to environmentally relevant concentrations through two embryonic windows: first period occurred during epiboly process (named as "early exposure") second overlapped ontogenesis cardiogenesis processes "late exposure"). Following 72 hour exposure, embryos transferred clean seawater a screening was...
In the North Sea, number and size of offshore wind (OW) turbines, together with associated network High Voltage Direct Current (HVDC) subsea cables, will increase rapidly over coming years. HVDC cables produce magnetic fields (MFs) that might have an impact on marine animals encounter them. One fish species is at risk exposure to MF OW lesser sandeel (Ammodytes marinus), a keystone Sea basin. Lesser could be exposed as larvae, when they drift in proximity turbines. Whether MFs behavior...
Crude oil causes severe abnormalities in developing fish. Photomodification of constituents crude increases its toxicity several fold. We report on the effect oil, combination with ultraviolet (UV) radiation, Atlantic haddock (Melanogrammus aeglefinus) embryos. Accumulation eggshell makes embryos particularly susceptible to exposure. At high latitudes, they can be exposed UV radiation many hours a day. Haddock were (5-300 μg oil/L nominal loading concentrations) for three days presence and...
Mahi-mahi (Coryphaena hippurus) is a commercially and ecologically important fish species that widely distributed in tropical subtropical waters. Biological attributes reproductive capacities of mahi-mahi make it tractable model for experimental studies. In this study, life development cultured from the zygote stage to adult has been described.A comprehensive developmental table created reporting as primarily detailed observations morphology. Additionally, physiological, behavioral,...
Photo-enhanced toxicity of crude oil is produced by exposure to ultraviolet (UV) radiation. Atlantic cod (Gadus morhua) embryos were exposed with and without UV radiation (290-400 nm) from 3 days post fertilization (dpf) until 6 dpf. Embryos the co-exposure experiment continually hatching at 11 Differences in body burden levels cyp1a expression observed between regimes. High doses increased mortality co-exposed embryos, as well craniofacial malformations heart deformities larvae both...
Lesser sandeel (Ammodytes marinus) is widely distributed in North Sea ecosystems. Sandeel acts as a critical trophic link between zooplankton and top predators (fish, mammals, sea birds). Because they live buried the sand, may be directly affected by rapid expansion of anthropogenic activities linked to their habitat on bottom (e.g., hydrocarbon extraction, offshore renewable energy, subsea mining). It is, therefore, important understand impact cumulative environmental stressors this...
The oil industry's expansion and increased operational activity at older installations, along with their demolition, contribute to rising cumulative pollution a heightened risk of accidental spills. lesser sandeel (Ammodytes marinus) is keystone prey species in the North Sea coastal systems. Their eggs adhere seabed substrate making them particularly vulnerable exposure during embryonic development. We evaluated sensitivity embryos crude laboratory by exposing dispersed concentrations 0, 15,...